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Water-Year Summary for Site 03513000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  

Water year 2023: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2023
LOCATION - Lat 35°25'39", long 83°26'49" referenced to North American Datum of 1983, Swain County, NC, Hydrologic Unit 06010203, on left bank 400 ft downstream of bridge on Secondary Road 1364, Everett Street, in Bryson City, 0.6 mi downstream of Deep Creek, and at river mile 12.6.
DRAINAGE AREA - 655 mi². (measured by TVA from topographic maps, scale, 1:24,000). Basin is made up of steep wooded slopes; small farms, towns and communities in the valleys, moderately populated; several lakes and reservoirs are located in upper reaches of basin. Average annual rainfall is 50-60 inches.
REVISIONS HISTORY - WSP 523: 1916, daily discharges. WSP 823: Drainage area. WSP 1306: 1898-1929, 1933-34, maximum discharges. WSP 1336: 1898, 1900-1906, 1908-1915, 1917-1929, 1932, 1934, maximum discharges; 1906, 1915, 1916-1918, daily discharges.
PERIOD OF RECORD - October 1897 to December 1981, October 1983 to January 1995, April 1996 to current year. Monthly discharge only for some periods, published in WSP 1306.
GAGE - Data collection platform. Datum of gage is 1,714.32 ft above NAVD of 1988. Satellite telemetry at streamgage.

Considerable fluctuations caused by power plants upstream from station. Flow regulated by Thorpe Lake, Cedar Cliff Lake, and Lake Ela.

Gage-height records are generally good. Discharge records are generally good except for estimated discharges, which are fair.  Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-nc_nwisweb_data_inquiries@usgs.gov.

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of May 1840, Mar. 6, 1867, and June 1876 reached stages of 22, 19, and 19 ft, respectively, present site and datum, from studies by Tennessee Valley Authority; discharge not determined. The flood in May 1840 exceeded all other observed floods at this location.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge from rating curve extended above 28,000 ft³/s on basis of slope-area measurement of peak flow.
PERIOD OF RECORD - October 1999 to October 2014 (discontinued).